Vehicle Air Guide Assembly With Sliding Tab Aperture

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Solution Overview

Problem

Underside air guides on vehicles face challenges in maintaining clearance to avoid obstacles while providing optimal aerodynamics, as existing designs can disengage when subjected to external forces, compromising their structural integrity and aerodynamic profile.

Innovation Solution

An air guide assembly featuring an air guide with extensions that include a tab system allowing sliding movement and interlocking mechanisms to prevent disengagement, utilizing a tab feature that facilitates sliding relative to an aperture, ensuring the air guide extensions remain connected while allowing for flexibility and movement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the air guide clearance is increased to clear obstacles, then the vehicle can avoid obstacles disposed on the ground, but the aerodynamic profile deteriorates

Engineering Contradiction:
Improveobstacle clearance capabilityVSAvoidaerodynamic profile
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The air guide is designed with dynamic movement capability, allowing it to pivot between a first position (lower clearance for aerodynamics) and a second position (higher clearance for obstacle avoidance). This dynamic adjustment resolves the contradiction by enabling the system to adapt to different operational conditions rather than being fixed in one clearance position.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the clearance parameter dynamically based on operational needs. By pivoting the air guide between two positions, the clearance distance between the air guide and ground is adjusted, allowing optimization between aerodynamic performance and obstacle clearance capability depending on the driving conditions.

Inventive Principle:
Principle #35Parameter changes

2Strength

If the air guide is made rigid to maintain structural integrity, then the structural strength is improved, but the ability to withstand external forces without disengagement deteriorates

Engineering Contradiction:
Improvestructural integrityVSAvoidresistance to disengagement under external force
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The connection between the air guide and support bracket is made dynamic through a pivot joint with a retaining feature. This allows the air guide to pivot when external forces are applied, preventing rigid failure and disengagement, while the retaining feature ensures it returns to its operational position, resolving the contradiction between rigidity and flexibility.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system incorporates flexible movement capability through the pivot joint, allowing the air guide to flex and pivot when subjected to external forces such as impacts from obstacles. This flexibility prevents structural failure and disengagement while maintaining overall structural integrity through the retaining feature.

Inventive Principle:
Principle #30Flexible shells and thin films

3Object-affected harmful factors

If the air guide is positioned low for aerodynamics, then the aerodynamic profile is improved, but the clearance to clear obstacles deteriorates

Engineering Contradiction:
Improveaerodynamic profileVSAvoidobstacle clearance capability
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The air guide is designed with dynamic movement capability, allowing it to pivot between a first position (lower clearance for aerodynamics) and a second position (higher clearance for obstacle avoidance). This dynamic adjustment resolves the contradiction by enabling the system to adapt to different operational conditions rather than being fixed in one clearance position.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS9108686B2Air guide assembly for vehicle
Publication Date: 2015.08.18 HONDA MOTOR CO LTD
  • US9108686B2 patent drawing
  • US9108686B2 patent drawing
  • US9108686B2 patent drawing

AI summary

An air guide assembly for a vehicle includes an air guide depending from an underside of the vehicle and an air guide extension contiguously disposed at one lateral end of the air guide. The air guide extension includes a tab received through a tab aperture defined in the air guide. The tab includes a tab feature facilitating sliding movement of the tab relative to the tab aperture due to an external force being applied to one of the air guide and the air guide extension.